Spool mounting for textile machines



. July 7,1936. F. B. JAVERY ET AL SPOOL MOUNTING FOR TEXTILE MACHINES 2 Sheets-Sheet 1 Filed Aug. 23, 1934 izzvt'rzznsr j/ afl/f 5 J5 Ye/y Arman .Ifirery July 7, 1936. F. B. JAVERY ET AL SPOOL MOUNTING FOR TEXTILE MACHINES Filed Aug. 23, 1934 2 Sheets-Sheet 2 are/y firing J'Jrer 1% Patented July 7, 1936 NlTED STATES PATENT OFFICE SPOOL MOUNTHNG FOR TEXTILE MACHINES Application August 23, 1934, Serial No. 741,128

5 Claims. (0]. 242-) The present invention relates to an improved mounting for the spools and yarn packages of textile machines such as creels, twisting frames and the like, wherein yarn is drawn from a rotatable spool or package. The object of the invention is to provide a mounting for rotatably supporting a spool or package so that the yarn may be drawn therefrom at high speed without vibration, and without exhibiting any tendency towards endwise movement on the supporting spindle.

The improved mounting of the present invention may be readily applied to the spindles and spools of existing winding machinery and in no way interferes with the dofiing of the spools and yarn packages in the usual manner. Furthermore, the invention contemplates the provision of means for preventing over-running of a spool upon cessation of the winding or drawing operation. The above and other advantageous features of the invention will hereinafter more fully appear from the following description taken in connection with the accompanying drawings, in which:-

Fig. 1 is a horizontal sectional view showing the mounting of a spool in accordance with the invention.

Fig. 2 is a vertical sectional View along the line 2-2 of Fig. l, on an enlarged scale, the end flange not being shown.

Fig. 3 is a perspective view illustrating the posi-' tioning of a spool bearing member on a spindle.

Fig. 4 is a perspective view on an enlarged scale, showing the bearing of Fig. 3 mounted on the spindle. v

Fig. 5 is a perspective view similar to Fig. 4, illustrating the construction of the bearing for the opposite end of the spool.

Fig, 6 is a horizontal sectional view illustrating the mounting of a yarn packagein accordance with the invention.

Fig. '7 is a vertical sectional view along the line 1-1 of Fig. 6, looking in the direction of the arrows.

Fig. 8 is a horizontal sectional view illustrating a modified form of spool mounting.

Fig. 9 is a vertical sectional View along the line 9-4] of Fig. 8, looking in the direction of the arrows.

Fig. 10 is a horizontal sectional View illustrating a still further modification of the invention.

Fig. 11 is a vertical sectional View along the line III I. of Fig. 10, looking in the direction of the arrows.

Fig. 12 is a vertical sectional view along the line I2--I2 of Fig. 10.

Like reference characters refer to like parts in the different figures.

Referring first to Fig. 1, the invention contemplates the rotatable mounting of a spool I on a spindle 2 that is supported in a substantially horizontal position by a suitable frame member 3 forming part of a textile machine, such as a creel or drawing frame. The barrel of the spool I provides an opening 4 extending longitudinally therethrough, the opening 4 being of appreciably larger diameter than the spindle 2. This opening 4 is countersunk at its ends to provide seats 5, 5 concentric with the opening 4 for receiving bearing members 6 and I on which the spool is freely rotatable.

As best shown in Figs. 3 and 4, the bearing 6 or the outer end of the spool I comprises a sleeve preferably formed of wood impregnated with a lubricant, with a bore 8 extending axially through the sleeve. The bore 8 is slightly smaller in diameter than the spindle 2, and the sleeve provides a radial slot 9 communicating with the bore 8, the purpose of the slot 9 being to permit a certain amount of expansion of the sleeve when the bearing 6 is pressed on the spindle 2. Such expansion of the bearing 6, due to spreading of the slot 9, is illustrated on a somewhat exaggerated scale in Fig. 4. When the bearing 6 is so positioned on the spindle, it is apparent that the inherent resiliency. of the bearing material will exert a clamping action on the spindle, tending to oppose any axial movement of the bearing thereon.

The bearing 6 is adapted to be freely received in one seat 5 in the barrel of the spool, and the bearing 6 is retained in the seat 5 by means of a plate Ill suitably secured to the end of the spool barrel by screws II. The bearing 6 is slightly shorter than the axial length of the seat 5 to prevent binding at the end surfaces of the bearing, and the outer surface of the bearing 6 provides spaced curved. bearing surfaces I2 alternating with flat surfaces I3. As best shown in Fig. 2, the bearing surfaces l2 are concentric about the axis of the bore 8, and this arrangement of spaced symmetrically arranged bearing surfaces has been found to result in extremely free rotation of the spool on the bearing when the latter is frictionally clamped on the spindle spool is cut away to provide fiat surfaces i5 alter,-

nating with curved bearing surfaces iii which are concentric about the axis of the bearing, in common with the curved surfaces H of the other bearing 6.

When it is desired to mounta spool on a spindle in accordance with the present invention; a

a bearing 1 is first pressed on the spindle 2 with such an arrangement is shown in Fig. 1.

its cylindrical end portion in substantial engagement with the frame member 3, as shown in Fig. 1. A spool l with a bearing '6 loosely retained in an end seat 5 by the plate ill is then placed on the spindle with its opposite bearing seat 5 receiving the free end of the bearing 1. With the spool iso mounted, the frictional engage ment of the slotted bearings 6 and l With the spindle 2 effectively prevent any movement of the spool axially of the spindle, without in any way interfering with free rotation of the spool itself onthe clampedbearings. The fact that each of the bearings 6 and 1 provides spaced concentric surfaces IE, or l6,disposed substantially at the corners of an equilateral triangle insures that the spool will rotate freely on the bearings, without any possibility of lateral movement which would result in vibrations when the spool- I turns at high speed. That is to say,-the'barre1 of the spool is always supported. with its axis substantially coinciding with the axis of the spindle, so that itis practically impossible for the spool to wobble at either end, as often occurs when a spool is loosely mounted on a round spindle extending the entire length of the spool.-

When it is desired to replace an exhausted spool with a full one, it is'an easy matter to. withdraw the exhausted spool by pulling its'upper endfar enough to? free the bearing 6 from the spindle, whereupon the spool is entirelyfree of the spindle.

.As previouslypointed out, the invention also contemplates the provision of means for preventing over-running of a spool upon the cessationof the winding or drawing operation, and To this end, a strip of rubberl'l in theform of aloop is mounted on the spindle 2, with one side 'of the loop clamped between the frame member 3 and a washer 18 which is engaged by the cylindrical end of the bearing 1. The other side of the loop provides an opening 59 freely encircling the bearing Land washers 29 and 2| composed of fiber and felt respectively, are interposed between the free side ofthe rubber loop and the end flange fa of the'spool i. When the spool lis: positioned on the spindle withits bearings 6 and 'l in frictional engagementtherewith, the rubber. loop-ll is slightly compressed, although the very small amount of friction resulting from the slight pressure of the felt washer 2! against the end of the spool'is not sufiioient to interfere with free rotation of the spool on its bearings. However, upon cessation of the winding or drawing operation with no further draft on the yarn, the friction exerted by the felt Washer is slimcient to cause a braking action on the spool which effectively prevents any appreciable overrunning thereof. 7

Referring now to Figs. 6 and '7, there is shown a modified form of mounting for supporting a yarn package 22 which is wound on a hollow cylindrical core 23 of paper or fiber, or any other suitable light durable material. In order to re ceive the package 22, a core holder or spool 24 is provided, the outer diameter of which is such as to tightly fit the inside of the cylindrical core 23. One end of the spool 23 provides a flange 25 having a groove 26 forv receiving one end of the 22 is placed on the spool, it is adapted to rotate therewith.

The spool 24 provides an opening 21 extending longitudinally therethrough and of appreciably larger, diameter than the spindle 2, and the opening 21 is countersunk at its ends to provide seats 28' amaze for receiving bearing members '30 and 3| on which the spool 2% is freely rotatable. The

yarn package core 23, so that when the package 3B and 3| functions in substantially the same manner as the spool I. 7

With the modified construction of Figs. 6 and '7, it is possible to equip the spindles of a creel, or drawing frame with package holders or spools 24 and mount on these spools standard yarn packages, whereupon the apparatus will operate in the same manner as with the yarn Wound directly on the spools, as described with reference to Fig. 1. When doffing, with the arrangement shown in Fig. 6, either the empty cores 23 may be withdrawn separately from the spools without removing the latter from the spindles, or each spool and yarn package maybe handled as a unit," if desired.

Referring now to Figs. 8 and 9; there is shown a modification of the invention, whereby spools may be rotatably'mounted in accordance with the invention, without the necessity of providing a bearing at one end of the spool, as shown in Fig. 1. In Fig; 8 a spool 34 provides an opening 35 extending longitudinally therethrough of ap-' preciably larger diameterthan the spindle 2,"with the ends of the spool barrel providing bearing seats 36 and 31 for receiving bearings'38 and 39. The bearing 39f-nearest the frame member 3 is formed identically with the bearing I described with reference to Fig. 1, and is adapted to frictionally-engage the spindle in the same manner as the bearing 1. The bearing 38, howeveryis not carried by the spool 34, but'extends beyond the end of the spool" into a removable cap 40. An

opening 4| in the cap through which the .bearing 7 When mounting a spool 34 on a'spindle 2 the bearing 39 is first positioned at the based the spindle as before, whereupon the spool is Placed on the spindle with one end supported by the bearing 39. The opposite end of the spool is then loose on the spindle, but upon pressing the cap down upon the spindle, the end of the hearing 38 rotatably supports the end of the spool 34 in the same manner as does the bearing 6 previously described. In other words, positioning of the cap 49 completes the assembly, and since the bearing 38 carried by the cap 40 frictionally clamps the spindle, the spool is free to rotate on the bearings 38 and 39, without possibility of end play or vibration. In the construction of Fig. 8 the spools 34 are of substantially standard form and it is entirely immaterial which end is first placed on the spindle, due to the fact that the outer bearing 38 does not constitute part of the spool.

Referring now to Figs. 10, 11 and 12, there is shown a still further modification of the inven-- tion for rotatably mounting a spool of the type that employs pressed metal parts, such spools being used to a considerable extent due totheir strength and durability. In Fig. such a spool is indicated by the reference character 45, and comprises a hollow cylindrical core 56 clamped between pressed metal end flanges 47. The spool 45 further comprises a metal sleeve 48, and the several parts are retained together in concentric relation by riveting over the ends of the sleeve,

as indicated at 48a.

In mounting the spool 55 on the spindle 2, a bearing 49 is provided near the base of the spindle which is similar in construction to the bearing 1 of Fig. 1, with the exception that it provides an extension 50 of such diameter as to be received freely in the bore of the sleeve 68. Preferably the bearing extension 50 is composed of metal, although it can be composed of the same material as the bearing 49, namely lubricant impregnated wood. A cap 5| is provided at the opposite end of the spindle 2, which cap carries a bearing 52 retained within the cap by a plate 53 and cooperating screws 54. The end of the bearing 52 opposite the plate 53 abuts a flange 55a provided on a bearing extension 55, which is preferably composed of metal.

With the above described arrangement, the bearing 59 with its extension 58 are first positioned at the base of the spindle 2, and the spool 45 placed in position with the extension 55 received in the end of the sleeve 38. The cap 5| is then placed on the spindle 2, with the extension 55 entering the sleeve 48 and the bearing 52 frictionally clamping the end of the spindle. The spool 45 is then free to rotate between the bearings without possibility of end play, due to the clamping of the cap 5| on the spindle. Obviously, the spool 45 may be readily dofied upon removal of the cap 5|, itbeing evident that either end of the spool may be placed first on the spindle.

From the foregoing, it is apparent that by the present invention there is provided an improved mounting for rotatably supporting spools or yarn packages so that the yarn may be drawn therefrom at high speed without substantial vibration, and Without exhibiting any tendency towards endwise movement on the supporting spindle. The improved mounting is readily adapted for application to the spindles of existing creels or twisting frames, inasmuch as the slotted bearings may be formed to frictionally clamp any desired size of spindle. Furthermore, the invention is adapted for the mounting of standard spools or yarn packages wound on cores, Without in any way interfering with the ready dofiing of the spools or packages and their handling in the usual manner.

We claim:-

1. The combination with a spindle and a spool turnable thereon, of a bearing member for each end of said spool, each of said members comprising a split sleeve frictionally engaging said spindle with an outer surface of said sleeve providing a bearing surface for said spool.

2. The combination with a spindle and a spool turnable thereon, of a bearing member at each end of said spool on which the latter is journaled, each of said bearing members comprising a split sleeve normally having a bore slightly smaller than the spindle to frictionally engage said spindle when positioned thereon.

3. The combination with a spindle and a spool turnable thereon, of a split bearing sleeve engaging said spindle adjacent the outer end thereof for retaining the spool against axial movement on said spindle, said sleeve normally having a bore slightly smaller than the spindle, whereby expansion of the sleeve causes it to frictionally clamp the spindle.

4. The combination with a spindle and a spool having an axial bore therethrough for said spindle, of a split bearing sleeve secured to said spool in alinement with said axial bore, said sleeve having a bore normally slightly smaller than the spindle.

5. The combination with a spindle and a spool having an axial bore therethrough for said spindle, of a split bearing sleeve positioned within the spool in alinement with the axial bore thereof, said sleeve engaging the spindle and by its frictional engagement therewith retaining the spool against axial movement thereon, the outer surface of said sleeve providing a bearing surface for said spool.

FRANK B. JAVERY. ARMON J. JAVERY. 

